1 . It rained heavily and a stream _______(蜿蜒) its way across the field.

2 . He noticed the remains of a snake which was __________ round the electric wires of a 16,000-volt power line.

3 . That evening, the baby snake __________ (蜿蜒，曲折) its way together with its mum through the undergrowth, trying to find its own prey (猎物). (根据汉语提示单词拼写)